T135 port and polished your engine

Hi guys,

from the post of member glowplug mentioning his modifications
to port and polished his yamaha sniper engine.

and also reading from motomans port and polished.
will this also work with stock yamaha sniper/spark 135 engine?

what benefits will this make?

from Yamaha T150/T135 http://ift.tt/1LaRaoZ
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